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升降式止回阀
h41h升降式止回阀
止回阀是能自动阻止流体倒流的阀门。止回阀的阀瓣在流体压力作用下开启，流体从进口侧流向出口侧。当进口侧压力低于出口侧时，阀瓣在流体压差、本身重力等因素作用下自动关闭以防止流体倒流。
升降式止回阀的结构一般与截止阀相似，其阀瓣沿着通道中心线作升降运动，动作可靠，但流体阻力较大，适用于较小口径的场合。升降式止回阀可分为直通式和立式两种。直通式升降式止回阀一般只能安装在水平管路，而立式升降止回阀一般应安装在垂直管路。
|
型号 |
公称 |
主要结构尺寸(mm) |
阀体
材料 |
性能规范 |
||||||
|
通径DN(mm) |
压力PN(MPa) |
D |
D1 |
L |
L1 |
H |
适用温度(℃) |
适用介质 |
||
|
H41H-25
H41W-25P
H41W-25R |
32 |
2.5 |
135 |
|
180 |
|
|
C:碳钢
P:1Cr18Ni9Ti
R:0Cr18Ni12Mo2Ti |
C≤425
P≤200
R≤200 |
C:水、油品、蒸气等
P:硝酸类
R:醋酸类 |
|
40 |
" |
145 |
|
200 |
|
|
||||
|
50 |
" |
160 |
|
230 |
|
|
||||
|
65 |
" |
180 |
|
290 |
|
|
||||
|
80 |
" |
195 |
|
310 |
|
|
||||
|
100 |
" |
230 |
|
350 |
|
|
||||
|
125 |
" |
270 |
|
400 |
|
|
||||
|
150 |
" |
300 |
|
480 |
|
|
||||
|
200 |
" |
360 |
|
600 |
|
|
||||
|
H41H-40
H41W-40P
H41W-40R |
32 |
4.0 |
135 |
|
180 |
|
|
C:碳钢
P:1Cr18Ni9Ti
R:0Cr18Ni12Mo2Ti |
C≤425
P≤200
R≤200 |
C:水、油品、蒸气等
P:硝酸类
R:醋酸类 |
|
40 |
" |
145 |
|
200 |
|
|
||||
|
50 |
" |
160 |
|
230 |
|
|
||||
|
65 |
" |
180 |
|
290 |
|
|
||||
|
80 |
" |
195 |
|
310 |
|
|
||||
|
100 |
" |
230 |
|
350 |
|
|
||||
|
125 |
" |
270 |
|
400 |
|
|
||||
|
150 |
" |
300 |
|
480 |
|
|
||||
|
200 |
" |
360 |
|
600 |
|
|
||||
|
H41H-64 |
32 |
6.4 |
150 |
|
230 |
|
|
碳钢 |
≤425 |
水、油品、蒸气 |
|
" |
40 |
" |
165 |
|
260 |
|
|
" |
" |
" |
|
" |
50 |
" |
175 |
|
300 |
|
|
" |
" |
" |
|
" |
65 |
" |
200 |
|
340 |
|
|
" |
" |
" |
|
" |
80 |
" |
210 |
|
380 |
|
|
" |
" |
" |
|
" |
100 |
" |
250 |
|
430 |
|
|
" |
" |
" |
|
H41H-100 |
32 |
10.0 |
150 |
|
230 |
|
|
碳钢 |
≤425 |
水、油品、蒸气 |
|
" |
40 |
" |
165 |
|
260 |
|
|
" |
" |
" |
|
" |
50 |
" |
195 |
|
300 |
|
|
" |
" |
" |
|
" |
65 |
" |
200 |
|
340 |
|
|
" |
" |
" |
|
" |
80 |
" |
230 |
|
380 |
|
|
" |
" |
" |
|
" |
100 |
" |
265 |
|
430 |
|
|
" |
" |
" |
